refactor to use github proxy

.github/workflows/preview-theme.yml

@@ -4,48 +4,63 @@ on:
   push:
     branches:
       - add/playground-theme-preview
+  pull_request:
 
 jobs:
-  prepare-and-upload-zips:
+  check-for-changes-to-themes:
     runs-on: ubuntu-latest
-    outputs:
-      zip_paths: ${{ steps.prepare_zips.outputs.zip_paths }}
-      has_artifacts: ${{ steps.prepare_zips.outputs.zip_paths != '' && 'true' || 'false' }}
     steps:
-      - name: Checkout Code
+      - name: Checkout
         uses: actions/checkout@v2
 
-      - name: Prepare Zips and Determine Paths
-        id: prepare_zips
-        run: bash bin/prepare-zips.sh
-
-      # Debugging: Print the ZIP paths generated
-      - name: Print ZIP Paths
+      - name: Retrieved Theme Changes
+        id: check-for-changes
         run: |
-          echo "ZIP Paths: ${{ steps.prepare_zips.outputs.zip_paths }}"
+          # Retrieve list of all changed files
+          git fetch origin trunk:trunk
+          changed_files=$(git diff --name-only HEAD origin/trunk)
+          
+          # Loop through changed files and identify parent directories
+          declare -A unique_dirs
+          for file in $changed_files; do
+              dir_name=$(dirname "$file")
+              echo $dir_name
+              if [[ -f "$dir_name/style.css" ]]; then  # Check if the directory contains a theme
+                  unique_dirs["$dir_name"]=1  # Use associative array to keep directories unique
+                  echo $unique_dirs
+              fi
+          done
 
-      - name: Upload Zips as Artifacts
-        if: steps.prepare_zips.outputs.zip_paths != ''
-        uses: actions/upload-artifact@v2
-        with:
-          name: theme-zips
-          path: ${{ steps.prepare_zips.outputs.zip_paths }}
+          # Check if any themes have changed
+          if [[ ${#unique_dirs[@]} -eq 0 ]]; then
+              echo "No themes have changed"
+              echo "HAS_THEME_CHANGES=false" >> $GITHUB_OUTPUT
+              exit 78  # Exit with neutral status code
+          fi
 
-  generate-and-post-preview-links:
-    needs: prepare-and-upload-zips
-    if: needs.prepare-and-upload-zips.outputs.has_artifacts == 'true'
-    runs-on: ubuntu-latest
-    steps:
-      - name: Download Artifacts
-        uses: actions/download-artifact@v2
+          echo "HAS_THEME_CHANGES=true" >> $GITHUB_OUTPUT
+
+          # Generate preview links for each theme
+          preview_links=()
+          for dir in "${!unique_dirs[@]}"; do
+              theme_slug=$(basename "$dir")
+              preview_links+=(bash ./bin/generate-preview-link.sh "$theme_slug" "${{ github.event.pull_request.head.ref }}")
+          done
+
+          echo "PREVIEW_LINKS=${preview_links[@]}" >> $GITHUB_ENV
+        
+      - name: Comment on PR
+        id: comment-on-pr
+        if: ${{ steps.check-for-changes.outputs.HAS_THEME_CHANGES == 'true' }}
+        uses: actions/github-script@v3
         with:
-          name: theme-zips
-
-      - name: Checkout Code
-        uses: actions/checkout@v2
-
-      - name: Generate Preview Links
-        id: generate_links
-        run: bash bin/generate-preview-links.sh "${{ github.event.pull_request.number }}" "${{ needs.prepare-and-upload-zips.outputs.zip_paths }}"
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          script: |
+            const previewLinks = process.env.PREVIEW_LINKS.split(' ');
+            const comment = previewLinks.map(link => `- [Preview](${link})`).join('\n');
+            github.issues.createComment({
+              issue_number: context.issue.number,
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              body: `Preview links for theme changes:\n${comment}`
+            });

bin/generate-preview-links.sh

@@ -1,16 +1,34 @@
 #!/bin/bash
 
-pr_number=$1
-zip_paths=$2
+# Parse args
+theme_slug=$1
+branch=$2
 
-# Placeholder for generating preview links logic
-# Assuming each zip_path has been processed to generate a corresponding preview link
+# Generate the blueprint
+blueprint=$(cat <<EOF
+{
+     "steps": [
+          { "step": "login", "username": "admin", "password": "password" },
+          {
+               "step": "installTheme",
+               "themeZipFile": {
+                    "resource": "url",
+                    "url": "https://github-proxy.com/partial/Automattic/themes/$theme_slug?branch=$branch"
+               }
+          },
+          {
+               "step": "activateTheme",
+               "themeSlug": "$theme_slug"
+          }
+     ]
+}
+EOF
+)
+
+# Minify the blueprint
+minified_blueprint=$(echo "$blueprint" | jq -c -M '.')
+
+# Return the preview link.
+echo "- [Preview changes for $theme_slug](https://playground.wordpress.net/#$minified_blueprint)"
 
-# Using jq to format the JSON body for the comment
-preview_links_json=$(jq -n --arg links "$preview_links" '{body: $links}')
 
-# Posting the comment using GitHub API
-curl -s -H "Authorization: token $GITHUB_TOKEN" \
-     -H "Accept: application/vnd.github.v3+json" \
-     -d "$preview_links_json" \
-     "https://api.github.com/repos/${GITHUB_REPOSITORY}/issues/${pr_number}/comments"